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The aims of this paper is to study the effects of the V/III ratio of indium gallium nitride (InGaN) quantum wells (QWs) on the structural, optical and electrical properties of near-ultraviolet light-emitting diode (NUV-LED).

InGaN-based NUV-LED is successfully grown on the c-plane patterned sapphire substrate at atmospheric pressure using metal organic chemical vapor deposition.

The indium composition and thickness of InGaN QWs increased as the V/III ratio increased from 20871 to 11824, according to high-resolution X-ray diffraction. The V/III ratio was also found to have an important effect on the surface morphology of the InGaN QWs and thus the surface morphology of the subsequent layers. Apart from that, the electroluminescence measurement revealed that the V/III ratio had a major impact on the light output power (LOP) and the emission peak wavelength of the NUV-LED. The LOP increased by up to 53% at 100 mA, and the emission peak wavelength of the NUV-LED changed to a longer wavelength as the V/III ratio decreased from 20871 to 11824.

This study discovered a relation between the V/III ratio and the properties of QWs, which resulted in the LOP enhancement of the NUV-LED. High TMIn flow rates, which produced a low V/III ratio, contribute to the increased LOP of NUV-LED.

The purpose of this paper is to investigate the structural, electronic and optical properties of pure zinc oxide (ZnO) and transition metal (Tm)-doped ZnO using Tm elements from silver (Ag) and copper (Cu) by a first-principles study based on density functional theory (DFT) as implemented in the pseudo-potential plane wave in CASTEP computer code.

The calculations based on the generalized gradient approximation for Perdew-Burke-Ernzerhof for solids with Hubbard U (GGA-PBEsol+U) were performed by applying Hubbard corrections U_d = 5 eV for Zn 3d state, U_p = 9 eV for O 2p state, U_d = 6 eV for Ag 4d state and U_d = 9.5 eV for Cu 3d state. The crystal structure used in this calculation was hexagonal wurtzite ZnO with a space group of P63mc and supercell 2 × 2 × 2.

The total energy was calculated to determine the best position for Ag and Cu dopants. The band structures and density of states show that Tm-doped ZnO has a lower bandgaps value than pure ZnO because of impurity energy levels from Ag 4d and Cu 3d states. In addition, Ag-doped ZnO exhibits a remarkable enhancement in visible light absorption over pure ZnO and Cu-doped ZnO because of its lower energy region and extended wavelength spectrum.

The results of this paper are important for the basic understanding of the 3d and 4d Tm doping effect ZnO and have a wide range of applications in designing high-efficiency energy harvesting solar cells.

This paper presents recently published resources on library instruction and information literacy, providing an introductory overview and a selected annotated bibliography of publications covering various library types, study populations and research contexts.

This paper introduces and annotates English-language periodical articles, monographs, dissertations, reports and other materials on library instruction and information literacy published in 2020.

The paper provides a brief description of all 440 sources and highlights sources that contain unique or significant scholarly contributions.

The information may be used by librarians, researchers and anyone interested in a quick and comprehensive reference to literature on library instruction and information literacy.

One challenge when launching new banking services is to overcome resistance to change so as to accelerate market acceptance. This is the case of Islamic credit card (ICC). In response, this study aims to develop a conceptual framework that combines the innovation diffusion theory (IDT) and the theory of reasoned action (TRA) with religious obligation and customer awareness to explain behavior intention and usage behavior of ICC.

To test the conceptual model, the data are collected from 649 bank customers in Malaysia, and the structural equation modeling technique is used to test the forecasting model.

The study results support some relationships of IDT and TRA, such as relative advantage, compatibility, trialability, observability, attitude and also the customer awareness as a stronger predictor of intention of ICC.

To the author’s knowledge, there have not been any attempt to develop a conceptual model for identifying the factors that influence the adoption of ICC by integrating IDT and TRA and other added measures. Therefore, this study adds to the body of knowledge regarding ICC adoption studies by extending the IDT in this domain and integrating it with TRA as two well-established models in the area of acceptance and usage behavior studies.

This study aims to explore the presumed relationship between religion and purchase behavior of consumers in the context of Bangladesh.

This research is divided into two main parts. In the first one, the authors reviewed some of the most important studies relative to religion and marketing and those specifically relative to Islamic marketing. In the second part, this research shows the findings of a structured questionnaire administered to a sample of Muslim consumers currently residing in the capital city of Bangladesh – Dhaka. The questionnaire also sought to find out the respondents’ attitude towards the modern marketing tactics, in terms of the physical and visual appearance of local products, their perception of religious principles in the purchase decision and their attitude towards imported products of non-Muslim countries.

Results of this study highlight that religion often represents an essential reference point in influencing the perception and purchase behavior of consumers in the context of Bangladesh. This implies that marketing strategies based on Islamic ethics is going to be quite instrumental in order to reach out to the consumers in Muslim countries. As such, there is largely a strong positive relationship between religion and the purchase behavior of Muslim consumers.

The lack of research on Islamic marketing limits the intensity of arguments in this study. For this reason, the literature review is not completely exhaustive. A small sample size has also been used due to time and resource constraints. Future research can be done on a bigger sample size of Bangladesh or other Islamic countries across the world. Other research avenues may include the study of Islamic marketing mix and exploring the factors that can influence non-Muslim consumers to select products and services based on Islamic ethics.

It is very important for businesses to introduce healthy practices in countries like Bangladesh and this can be rightly achieved through the use of Islamic marketing. Furthermore, the use of Islamic ethics in marketing strategies can eventually influence the religious perception of consumers and make them loyal towards any brands, products, and services in the context of Bangladesh.

The chapter draws attention to Bangladesh as one of the potential markets where the concept of Islamic market mechanism can be established. It also highlights the challenges that global marketers can face with Islamic marketing in Muslim countries like Bangladesh. Besides, it is the only study to date that focuses upon the relationship of religion, marketing, and consumer behavior for consumer products of the manufacturing industry.

The study aims to examine the difference of financial-based brand equity of Sharia-compliant and non-Sharia-compliant companies listed in the stock market.

The five-year data were collected from 561 companies listed in the Indonesian stock market (349 Sharia-compliant firms and 212 non-Sharia-compliant firms).

Based on five years of observations, the study shows that Sharia-compliant companies have much higher brand equity than companies that are not Sharia-compliant. However, the study did not find consistent results when the study examined the differences between brand equity in newly listed Sharia-compliant firms in the short run (two-quarters of the observations). In other words, Sharia-compliant status positively impacted a company’s brand equity only in the long run.

The study examines only the brand equity of Sharia- and non-Sharia-compliant companies in the Indonesian stock market.

The study suggests that companies should list their equity in the Islamic stock market as the empirical evidence shows that the companies listed in the Sharia index have much higher brand equity than companies listed in the non-Sharia index, although this impact can only be seen in the long run.

The study integrates finance and marketing perspectives, which are often disconnected in daily business. In addition, the study provides a piece of empirical evidence on the effect of financial decision to be listed in the Islamic stock market on the establishment of brand equity, which represents the long-term intangible assets of the firm in the eyes of the customers.

The purpose of this study is to investigate the adoption of cloud computing as a digital technology by small and medium enterprises (SMEs) and assess its impact on sustainability of such enterprises.

A model was developed that featured factors influencing SMEs sustainability. Primary quantitative data was gathered using a survey as an instrument. Total set of n = 387 responses were gathered using a convenience sampling method.

Findings reveal that cost reduction, ease of use, reliability and sharing and collaboration factors have significant statistical impacts on SMEs sustainability, whereas privacy and security factor has no significant statistical on SMEs sustainability.

The study poses significant implications on managers and SME development authority to create an inductive environment for technological support for SMEs’ sustainability.

The study enhances SMEs’ performance and sustainability by upgrading their existing information and communications technology as a digital infrastructure and benefiting from novel IT-based cloud revolution. Several studies have provided an understanding of the use of cloud computing services in SMEs but lack enough information about the challenges and impact on SMEs sustainability.

The purpose of this paper is to examine how the board of directors effectiveness (BODE), financial determinants, Takaful-specific determinants and the Takaful firms’ financial stability are related to the Shari’ah Supervisory Board’s quality (SCQ).

Using hierarchical regression analysis, the authors examine the determinants of financial stability of Takaful insurance and the authors test the moderator role of SCQ over 2016–2022 on a sample of 19 listed Takaful firms in 10 countries in the Middle East and South Asia region.

The findings reveal that SCQ negatively moderates the positive relationship between BODE, the Takaful model, diversification strategy, solvency, liquidity and Takaful financial stability. Shari’ah governance plays a crucial role in improving the financial soundness and the Shari’ah compliance of Takaful insurance.

This paper includes two main limitations. The results are restricted to the Middle East region and South Asia and may not be generalized to other areas. The study presents data from only 19 Takaful firms.

This kind of investigation is of immense relevance to enhance the understanding of governance and soundness of Takaful companies. Furthermore, it serves as a guide to the recruitment of Shari’ah board members, the choice of Takaful model and appropriate strategy to increase its financial stability.

This research studies the financial stability of Takaful insurance and the moderating role of SCQ, unlike the majority of other works that focus on financial performance.

This study aims to find out the problems of family Takaful (Islamic Life Insurance) operations in Bangladesh and proposes strategies to overcome the problems.

Qualitative data were collected through interviews with 32 respondents from two family Takaful operators in Dhaka, Bangladesh.

The study finds a number of problems of family Takaful which relate to the government, Takaful company and the Shariah board. Lack of governing guidelines for Takaful companies in Bangladesh is causing numerous operational problems of family Takaful. To overcome these obstacles, the government should propose separate Act for Takaful. This requires support from the stakeholders along with Islamic scholars in the country.

It is anticipated that the findings and suggestions of the study will assist the policymakers in improving the situation of family Takaful companies particularly in Bangladesh.

If the proposed suggestions are implemented in Takaful companies, the problems facing Takaful will likely be solved and more people will take part in Takaful. This would contribute to developing the country economically, raise Islamic values and foster peace and harmony in the society.

Mainly, this study is based on the primary research that has been conducted in family Takaful companies in Bangladesh.

This study aims to investigate the behavior of the green biomass-derived copper (lignin/silica/fatty acids) complex, copper lignin/silica/fatty acids (Cu-LSF) complex, when incorporated into the nonpolar ethylene propylene diene (EPDFM) rubber matrix, focusing on its reinforcing and antioxidant effect on the resulting EPDM composites.

The structure of the prepared EPDM composites was confirmed by Fourier-transform infrared spectroscopy, and the dispersion of the additive fillers and antioxidants in the EPDM matrix was investigated using scanning electron microscopy. Also, the rheometric characteristics, mechanical properties, swelling behavior and thermal gravimetric analysis of all the prepared EPDM composites were explored as well.

Results revealed that the Cu-LSF complex dispersed well in the nonpolar EPDM rubber matrix, in thepresence of coupling system, with enhanced Cu-LSF-rubber interactions and increased cross-linking density, which reflected on the improved rheological and mechanical properties of the resulting EPDM composites. From the various investigations performed in the current study, the authors can suggest 7–11 phr is the optimal effective concentration of Cu-LSF complex loading. Interestingly, EPDM composites containing Cu-LSF complex showed better antiaging performance, thermal stability and fluid resistance, when compared with those containing the commercial antioxidants (2,2,4-trimethyl-1,2-dihydroquinoline and N-isopropyl-N’-phenyl-p-phenylenediamine). These findings are in good agreement with our previous study on polar nitrile butadiene rubber.

The current study suggests the green biomass-derived Cu-LSF complex to be a promising low-cost and environmentally safe alternative filler and antioxidant to the hazardous commercial ones.